Many people know that Leonardo da Vinci (1452-1519) was an Italian polymath, one of the great creative minds of the Italian Renaissance and the painter of the Mona Lisa and The Last Supper. What, perhaps, they don't know is that his original notebook Codex Leicester, was sold to Bill Gates for $30 million; that as an ambidextrous, paranoid dyslexic, Leonardo could draw forwards with one hand while writing backwards with the other; and that he invented...